Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
In the cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents used are (a) O2 and CO respectively (b) O2 and Zn dust respectively
12
Nov
In the cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents used are (a) O2 and CO respectively (b) O2 and Zn dust respectively In the cyanide extraction process of silver from argentite ore the oxidizing and reducing agents used are (a) O2 and CO respectively (b) O2 and Zn dust [...]
Extraction of zinc from zinc blende is achieved by (a) Electrolytic reduction (b) Roasting followed by reduction with carbon
12
Nov
Extraction of zinc from zinc blende is achieved by (a) Electrolytic reduction (b) Roasting followed by reduction with carbon Extraction of zinc from zinc blende is achieved by (a) Electrolytic reduction (b) Roasting followed by reduction with carbon November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
A sodium salt on treatment with MgCl2 gives white precipitate only on heating. The anion of the sodium salt is (a) HCO3- (b) CO3 2- (c) NO3 – (d) SO4 2-
12
Nov
A sodium salt on treatment with MgCl2 gives white precipitate only on heating. The anion of the sodium salt is (a) HCO3- (b) CO3 2- (c) NO3 – (d) SO4 2- A sodium salt on treatment with MgCl2 gives white precipitate only on heating. The anion of the sodium salt is (a) HCO3- (b) CO3 [...]
By which process Pb and Sn are extracted respectively by (a) Carbon reduction : Self reduction (b) Self reduction : Carbon reduction
12
Nov
By which process Pb and Sn are extracted respectively by (a) Carbon reduction : Self reduction (b) Self reduction : Carbon reduction By which process Pb and Sn are extracted respectively by (a) Carbon reduction : Self reduction (b) Self reduction : Carbon reduction November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
Roasted gold ore Au + CN- + H2O to (X) + OH-; (X) + Zn to (Y) + Au. (X) and (Y) are (a) X = (Au (CN-)2)-; Y = (Zn(CN)4)2-
12
Nov
Roasted gold ore Au + CN- + H2O to (X) + OH-; (X) + Zn to (Y) + Au. (X) and (Y) are (a) X = (Au (CN-)2)-; Y = (Zn(CN)4)2- Roasted gold ore Au + CN- + H2O to (X) + OH-; (X) + Zn to (Y) + Au. (X) and (Y) are (a) [...]
Which of the following process is used in the extractive metallurgy of magnisium (a) Fused salt electrolysis (b) Self reduction (c) Aqueous solution electrolysis
12
Nov
Which of the following process is used in the extractive metallurgy of magnisium (a) Fused salt electrolysis (b) Self reduction (c) Aqueous solution electrolysis Which of the following process is used in the extractive metallurgy of magnisium (a) Fused salt electrolysis (b) Self reduction (c) Aqueous solution electrolysis November 12, 2020 Category: Uncategorised (JEE Advanced [...]
Electrolyte reduction of alumina to aluminium by Hall-Heroult process is carried out (a) In the presence of NaCl (b) In the presence of fluorite
12
Nov
Electrolyte reduction of alumina to aluminium by Hall-Heroult process is carried out (a) In the presence of NaCl (b) In the presence of fluorite Electrolyte reduction of alumina to aluminium by Hall-Heroult process is carried out (a) In the presence of NaCl (b) In the presence of fluorite November 12, 2020 Category: Uncategorised (JEE Advanced [...]
Among the following statements, the incorrect one is (a) Calamine and siderite and carbonates (b) Argentite and cuprite are oxides (c) Zinc blende and pyrites are sulplhides
12
Nov
Among the following statements, the incorrect one is (a) Calamine and siderite and carbonates (b) Argentite and cuprite are oxides (c) Zinc blende and pyrites are sulplhides Among the following statements the incorrect one is (a) Calamine and siderite and carbonates (b) Argentite and cuprite are oxides (c) Zinc blende and pyrites are sulplhides November [...]
Which of the following mineral does not contain Al (a) Cryolite (b) Mica (c) Feldspar (d) Fluorspar
12
Nov
Which of the following mineral does not contain Al (a) Cryolite (b) Mica (c) Feldspar (d) Fluorspar Which of the following mineral does not contain Al (a) Cryolite (b) Mica (c) Feldspar (d) Fluorspar November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The metallic lustre exhibited by sodium is explained by (a) Diffusion of sodium ions (b) Oscillations of loose electrons (c) Excitation of free proton
12
Nov
The metallic lustre exhibited by sodium is explained by (a) Diffusion of sodium ions (b) Oscillations of loose electrons (c) Excitation of free proton The metallic lustre exhibited by sodium is explained by (a) Diffusion of sodium ions (b) Oscillations of loose electrons (c) Excitation of free proton November 12, 2020 Category: Uncategorised (JEE Advanced [...]